SLUAAQ7A
August 2023 – April 2025
UCC256404
1
Abstract
Trademarks
1
Introduction
2
Theory of LLC Topology Design
3
Burst Mode Operating Control Mechanism
4
Potential ZCS Issue When Exiting Burst Mode
5
Design to External Circuit for Solving ZCS Issue at Burst Transition Period
6
Design to Accurate External Circuit for Solving ZCS Issue at Burst Transition Period_(Option)
6.1
Test Result of External Circuit for Solving ZCS Issue at Burst Transition Period
7
Summary
8
References
9
Revision History
8
References
Texas Instruments,
UCC25640x LLC Resonant Controller with Ultra-Low Audible Noise and Standby Power
, data sheet.